Maintenance aircraft systems

1. Subject Name: MAINTENANCE, OVERHAUL &
REPAIR OF AIRCRAFT SYSTEMS
Subject Code: 15AE664
MODULE 2: DOCUMENTATION FOR MAINTENANCE

2. ➢ Manufacturers documentation
➢ Airplane maintenance manual
➢ Fault Isolation Manual (FIM)
➢ Illustrated parts catalogue
➢ Wiring diagram manual
➢ Master minimum equipment
➢ FAR, Advisory circulars
➢ Airworthiness directions ATA document standards
➢ Technical policies and procedure manuals(TPPM)

3.  Types of Documentation
It has been said that the paper documentation
required for the maintenance of a modern jet liner
would weigh about the same as the airplane itself !
Whether or not this is true, there is certainly a
considerable amount of documentation.
This section will look at three main types of
documentation –
1. Manufacturer’s Documentation
2. Regulatory Documentation
3. Airline Generated Documentation

4.  Here, The manufacturer provides necessary
information on safe and proper use of
equipment for the better service life .
 Mostly, Operation instructions, installation
and assembly instructions, maintenance and
repair instructions, illustrated parts catalogue
may contain in the document.

5.  Formal Document will have all details about aircraft
maintenance.
 This includes checks of lubricating system,
functional checks and servicing of airplane.
 Usually it excludes structural modifications and
fiber glass paneling.
 Technician signs off logbook/non-routine work
card (NRWC)

6.  You can do component maintenance under the
aircraft category in two cases.
i) when the AMM tells you to do so by pointing
to a relevant CMM
ii) when the maintenance of the component does
not require the unit itself to be removed from the
airframe except for the purpose of improving
technical access.

7.  It is the document which details the way in which
aircraft maintenance tasks on the specified
component shall be accomplished.
 The maintenance tasks contained in these
manuals do include procedures for restoring a
structural component to a serviceable state and
reworking and refinishing procedures are often
provided in CMM.

8. • Set of fault isolation trees
• Block diagram
• Troubleshooting
• Isolate fault
• Identify/pinpoint problems

10.  It will have Parts list/location of all parts.
 It gives the details of
• Assemblies
• Subassemblies
• Alternate part numbers
• Part inter-changeability
• Modifications
• Pre and post modification
 It is used only as supporting reference with the Aircraft
maintenance manual

11.  This diagram focuses to show how the system
operates.
 It is suitable for learning and teaching and for
troubleshooting.
 Schematic Diagram of electrical and hydraulic
systems of aircraft contains the detailed
information and identifies wiring harnesses,
connectors and interfacing equipment.

12.  It is Essential for troubleshooting in wiring
systems.
 It contains complete run of wiring, including cable
bundle numbers and routing, plug and connector
numbers and locations and other structural
elements through which the wiring is routed.

15.  It is identified by the airframe manufacturer
and approved by the FAA.
 Identify the equipment which may be
degraded or inoperative at dispatch of the
aircraft.
 Airline’s responsibility to develop their own
manual for their specific equipment.

16.  It is doing maintenance works for the equipments
in MMEL before the dispatch of the product.
 It will check
• Pull/placard circuit breakers
• Disconnect power
• Tie up loose cables for removed
equipment

17.  It involves the configuration of the aircraft.
 It identifies any external parts of an aircraft type which may
be missing at the commencement of a flight.
 Discovered during line checks/pre-post flights
• Panels
• Gear doors
• Flap hinge fairings
• Cargo doors

18.  Storage and Recovery Document (SRD)
 Structure Repair Manual (SRM)
 Maintenance Planning Data Document (MPD)
 Certification Maintenance Requirements (CMRs)
 Task Cards (TC)
 Service Bulletins
 Service Letter
 Maintenance Tip

19.  Federal Aviation Regulations (FAR)
 Advisory Circulars(AC)
 Airworthiness Directive (AD)
 Notice of Proposed Rule Making (NPRM)

20.  These are related to all aspects of aviation
including
* commercial ,private aircrafts
* airports
* Navigational Aid
* ATC
* Pilot training

21. • Issued by FAA
• Designed to help airline operators meet
the FAR requirements
• suggestions how to comply
• They define acceptable means, but not the
only means, of showing compliance with
airworthiness regulations.

22.  The airworthiness directives are very important
regulations issued by FAA to correct an unsafe
condition that exists in an
* aircraft
* aircraft engine
* Propeller
* other aircraft appliance

23. Typically an ADs will include-
➢ A description of the unsafe condition
➢ The corrective action required
➢ Date of compliance
➢ Info on alternative methods of compliance.

24.  This is issued by FAA whenever the FAA
intends to change a FAR.
 It is issued in advance of the change to give
aviation industry plenty of time to study and
comment on the proposed change.

25.  Operations Specification (Ops Spec)
 Technical Policies and Procedures Manual
(TPPM)
 Inspection Manual (IM)
 Quality Assurance Manual (QA)

26.  Written by the airlines in accordance with
strict FAA requirements.
 It details the airline’s maintenance, inspection
and operations programs.
 This documents can be prepared only by the
operators or airliners.

27.  Primary document for M&E operations manual
 Defines exactly how all M&E functions and
activities will be carried out
 Personnel in M&E must be trained on the
TPPM

28. • It Identifies
• Key personnel
• Maintenance facilities
• Describe in detail activities involving
• Maintenance
• Inspection
• Testing

29.  It is a part of TPPM
• All inspection activities
• Mechanic inspection tasks
• QC inspector tasks
• Special Inspections (Hard landings , Bird strikes)
• Airlines required inspection item (RII) Program
• Paperwork and forms to carry out these
functions

30.  Special manual or part of TPPM
• It Defines
• Duties/responsibilities of QA auditors
• Annual QA processes and procedures
• Includes formats for Forms and reports
to be used

31.  It is a information standards for aviation maintenance and
flight operations.
 These standards provide recommended specifications for the
structure.
• Objective is to:
• Minimize cost and effort expended by operators
• Improve information quality
• Ensure that manufacturers provide data that meets
airline operational needs.

32. • Description and Operation (001 - 099)
• What system does
• Various operational modes
• Detailed description of how it works
• Fault Isolation (101 – 199)
• Fault trees
• Specific faults based on flight deck effects
• Maintenance Practices (201 - 299)
• When 2 or more actions must be used to complete task
• Followed by test

33. • Servicing (301 - 399)
• All servicing tasks
• Step-by step instructions
• Required materials
• Removal/Installation (401 - 499)
• Detailed step-by-step
• All conditions addressed
• Adjustment/Replacement (501 - 599)
• Normal maintenance
• Component replacement

34. • Inspection/Check (601 - 699)
• Zonal inspection activities
• Cleaning/painting (701 - 799)
• Aircraft
• Washing
• Cleaning
• Painting
• Approved repairs (801 - 899)
• Identifies repairs to
• Structure and aircraft skin
• Approved by FAA

35. THANK YOU